Handicap 1: You can back your team with a (+1) handicap, which means that your team will have a 1 goal advantage in the game, or (-1) means that your team will have to win with a score difference of more than 1 to win. Handicap -1.5: Your team will win if the score difference is two and more goals.
A handicap of +0.5 means that the bookmaker has given a +0.5 advantage to one team or player over the other. A bet on the disadvantaged team will win only if such a team wins by more than 0.5 points or goals. All other results, including a draw, will result in a lost bet.